Formats & ResolutionStudio Practice
Dither
Definition
Low-level noise intentionally added to a digital audio signal when reducing its bit depth, most commonly when converting from 24-bit to 16-bit. Dither prevents quantization distortion by randomizing the rounding errors that occur at lower bit depths.
In Simple Terms
A tiny bit of noise added on purpose when you convert from 24-bit to 16-bit — like CD quality. It sounds counterintuitive, but this noise actually prevents a worse-sounding type of distortion. Only apply it once, as the very last step.
Common Confusion
Dither should only be applied once, as the very last step before final export. Applying it multiple times accumulates noise without benefit. Never apply dither when staying at the same bit depth.